I'm just saying that these recent reveals help his case.
Well yeah if you want to get technical he does have a chance. Not an exponentially higher chance like you think. Just a slightly higher one compared to some of the other characters, but the other chart toppers are more or less just as likely and the main 3 even higher.
But given how unpredictable Sakurai is and the fact that SSB4's development is likely based on sales/popularity data, inside information on what was in development at that time (such as Pokemon) and a series of educated guesses by a professional from the last couple years due to game development taking time, we could also just get Kellam.
You really can't predict these things except for the obvious.